D. Ward Cutler and L. M. Crump 



15 



7 14 21 28 



Fig. 3. Active flagellates in Broadbalk, plot 2, from February 9— March 8, 1920. 



Daily countings. 



17 14 21 28 



Fig. 4. Cystic flagellates in Broadbalk, plot 2, from February 9— March 8, 1920. 



Daily countings. 



